Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 76 insertions, 0 deletions

diff --git a/Source/WebCore/history/BackForwardController.h b/Source/WebCore/history/BackForwardController.h
new file mode 100644
index 0000000..e89e32b
--- /dev/null
+++ b/Source/WebCore/history/BackForwardController.h
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+/*
+ * Copyright (C) 2010 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef BackForwardController_h
+#define BackForwardController_h
+
+#include <wtf/Noncopyable.h>
+#include <wtf/Forward.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class BackForwardList;
+class HistoryItem;
+class Page;
+
+class BackForwardController : public Noncopyable {
+public:
+    BackForwardController(Page*, PassRefPtr<BackForwardList>);
+    ~BackForwardController();
+
+    BackForwardList* client() const { return m_client.get(); }
+
+    bool canGoBackOrForward(int distance) const;
+    void goBackOrForward(int distance);
+
+    bool goBack();
+    bool goForward();
+
+    void addItem(PassRefPtr<HistoryItem>);
+    void setCurrentItem(HistoryItem*);
+        
+    int count() const;
+    int backCount() const;
+    int forwardCount() const;
+
+    HistoryItem* itemAtIndex(int);
+
+    bool isActive();
+
+    void close();
+
+    HistoryItem* backItem() { return itemAtIndex(-1); }
+    HistoryItem* currentItem() { return itemAtIndex(0); }
+    HistoryItem* forwardItem() { return itemAtIndex(1); }
+
+private:
+    Page* m_page;
+    RefPtr<BackForwardList> m_client;
+};
+
+} // namespace WebCore
+
+#endif // BackForwardController_h